Do you have a song that just pops in your head sometimes? Even if you haven't heard it for weeks or months? A few weeks ago, "That Thing You Do," the theme from the movie of the same name weaseled its way into my brain and my toes have been tapping ever since. When I was a young gal, I remember being devastated to learn that the Wonders weren't a real band, but a creation of Tom Hanks' imagination. Here, listen to "That Thing You Do," plus other songs from fictional bands.